1ISF:
reference: Crystallographic studies on human BST-1/CD157 with ADP-ribosyl cyclase and NAD glycohydrolase activities., Yamamoto-Katayama S, Ariyoshi M, Ishihara K, Hirano T, Jingami H, Morikawa K, J Mol Biol 2002 Feb 22;316(3):711-23. PMID: 11866528

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